Photo credit:

Bryan Hughes (

Common name

Huamantlan Rattlesnake

Scientific name

Crotalus scutulatus salvini

Conservation Status

Least Concern

Federal and State Protections

Sujetos de Especial Protección (MX)

Countries of Occurrence


Adult size

100cm (39.4in) 137.3cm (54in)

States or Providence 

Hidalgo, Tlaxcala, Puebla, Veracruz, Guanajuato, Querétaro


Species Description

This medium to large rattlesnake occurs in temperate pine-oak forests to grasslands and lava beds within the Central Mexican Plateau. Their diet includes small mammals. This subspecies is categorized as Subject to Special Protection in Mexico, the lowest level of protection, due to factors that could negatively affect their population viability.

The venom of the Huamantlan rattlesnake seems to entirely consist of "Type A" venom, entirely neurotoxic, unlike the other subspecies, the Mojave rattlesnake, which has Type A, Type B, and Type A+B venom. These differences may correlate with different species of prey, feeding behaviors, and ecological niches!

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